> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, August 09, 2005 10:39 AM
> To: beginners@perl.org
> Subject: Seeding variables from command line
>
> Sorry to bother everyone, but i was working on this yesterday and i
> couldn't get it to work. I guess i have the wrong syntax for passing
> variables in from the command line.
>
> Here's my script:
>
> ===== crypt.pl =====
> #!/usr/bin/perl
> my $pwd = $1;
> my $seed = $2;
> my $key = substr(crypt("$pwd","$seed"),2);
> print $key;
> =================
This is my first attempt at helping out (newbie myself) but I figure
I'll learn more if I can help provide answers. Here goes...
First, this is Perl, not a shell; Perl uses @ARGV for command line
arguments. $1 and $2 are not instantiated with the values of your
arguments.
Very simply, you could write the following:
#!/usr/bin/perl
use warnings;
use strict;
my $pwd = $ARGV[0];
my $seed = $ARGV[1];
my $key = substr(crypt("$pwd","$seed"),2);
print "$key\n";
I'd suggest checking the number of elements in @ARGV first, though, to
be sure you have the proper number of arguments.
ry
>
> For example, I want to type:
>
> crypt.pl string1 string2
>
> and it should spit out the value of $key.
>
> Right now both variables are returning null. Any suggestions?
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